[dibujante]

Yes, there would be a gradient somewhere. If that law extended to the point where you couldn't get utility water without a background check, some judge would find cause to throw it out mainly because of how silly it was. But on the other hand the water content of even a mildly alcoholic beverage doesn't make showing ID an unreasonable search. There are lots of ways the government can twist your arm into a "search" through this opt-in approach.